Studies on Threshing Theory and New Threshing Method

脱粒理论及脱粒新方法研究

• 批准号: 02660251
• 负责人: UMEDA Mikio
• 金额: $ 1.22万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02660251/
• 关键词: Head-feeding thresher; Jidatsu combine; Control technology; Transfer matrix method; Liner deviation analysis; Sensing device; Threshing scale model; Break-ears; 投げ込み式脱穀機; 対象作物の動理特性; 遂次積分法; 過渡応答解析; ワイブル分布; 動的システム; 脱穀機; 高階非線形連立差分方程式; サ-ボ弁

Head-feeding type thresher for Japanese small rice combine(Jidatsu combine)have advantages such as low power consumption and high threshing quality. However, the thresher have disadvantages such as no-good adaptability to other crops except rice and impossibility to realize high feed rate and large machine. This study aim to improve the default of current head-feeding type thresher by means of control technology. At the beginning of this study, physical property of crop must be measured. Wheat have most different characteristic comparing with rice. Hence, Physical property of rice and wheat were measured. A head of rice have many flexible branch with many grains. Transfer matrix method is fitted to analysis of branch system such as rice. Hence, computer program was developed by means of Transfer matrix method in order to analyze vibration characteristic. It, also, is clarified by means of Liner deviation analysis method that effect of scatter of grain mass and stem rigidity is few. Capability to grow threshing performance up in the case of adding automatic control to current head-feeding type thresher is investigated. As a result, the thresher cannot be improved by means of automatic control. Therefore, new thresher are planned. For the purpose of confirmation of function of new thresher and developing sensing device, scale model are manufactured. Same threshing quality are obtained provided the same threshing conditions between current and new thresher. And it is possible to detect happening of break-ears by the sensor. Analytical force acting on threshing tooth coincide with measured force. Hence, it is clarified to be able to design new thresher based on previous reported threshing theory. Many knowledges are obtained by means of this study.

日本小型水稻联合收割机（Jidatsu联合收割机）头喂入式脱粒机具有功耗低、脱粒质量高等优点。但脱粒机对水稻以外的其他作物适应性较差，无法实现高进给量和大型化等缺点。本研究旨在通过控制技术来改善现有头部喂入式脱粒机的缺陷。在本研究开始时，必须测量作物的物理特性。与稻米相比，小麦具有最不同的特性。因此，测量了稻米和小麦的物理性质。一粒稻子有许多柔韧的枝条和许多粒粒。传递矩阵法适用于水稻等枝系系统的分析。因此，利用传递矩阵法开发计算机程序来分析振动特性。并通过线性偏差分析方法表明，籽粒质量分散性和茎秆刚度的影响较小。研究了在现有的头部喂入式脱粒机上增加自动控制的情况下提高脱粒性能的能力。结果，脱粒机无法通过自动控制来改进。因此，计划安装新的脱粒机。为了确认新型脱粒机的功能和开发传感装置，制作了比例模型。如果当前脱粒机和新脱粒机之间具有相同的脱粒条件，则可获得相同的脱粒质量。并且可以通过传感器检测断耳的发生。作用在脱粒齿上的解析力与测量力一致。因此，明确了能够根据先前报道的脱粒理论设计新的脱粒机。许多知识都是通过这项研究获得的。

项目成果

Umeda, M., Tomomitsu, S., Namikawa, K.: "Vibration Analysis on Plants with many Branch" Journal of Kansai Branch of Japanese Society of Agricultural Machinery. 71. 49-52 (1992)

Umeda, M.、Tomomitsu, S.、Namikawa, K.：“多分支植物的振动分析”日本农业机械学会关西分会杂志。

梅田 幹雄,友光 秀一,並河 清: "多分岐系を有する植物体の振動解析" 農業機械学会関西支部報. 71. 49-52 (1992)

Mikio Umeda、Shuichi Tomomitsu、Kiyoshi Namikawa：“多分支系统植物的振动分析”日本农业机械学会关西分会杂志 71. 49-52 (1992)。

Namikawa, K., Umeda, M., Suguri, M., Harano, M.: "Experiment on Model Thresher" Journal of Kansai Branch of Japanese Society of Agricultural Machinery. 70. 5-6 (1991)

Namikawa, K.、Umeda, M.、Suguri, M.、Harano, M.：“模型脱粒机的实验”日本农业机械学会关西分会杂志。

並河 清,梅田 幹雄,村主 勝彦,原野 稔: "円盤型脱穀機の模型実験" 農業機械学会関西支部報. 70. 5-6 (1991)

Kiyoshi Namikawa、Mikio Umeda、Katsuhiko Murakushi、Minoru Harano：“圆盘式脱粒机的模型实验”日本农业机械学会关西分会学报70. 5-6 (1991)。

梅田 雄: "模型実験機による稲の脱穀実験" 農業機械学会誌.

Yu Umeda：“使用模型实验机的水稻脱粒实验”日本农业机械学会杂志。